脉冲超宽带TH-PPM多址通信的误比特率计算方法

New method of BER calculate for impulse-UWB TH-PPM multiple-access communications

简单地给出了脉冲超宽带(IR-UWB)TH-PPM多址通信方式在信道加性白高斯噪声(AWGN)与多址用户干扰高斯近似条件下的误比特率推导过程。从接收端相关检测时多址用户信号与本地模板信号相互作用产生误相关输出的平均出发,假定多址用户干扰是零均值的高斯过程,分析计算多用户干扰的方差,通过数值计算与系统仿真比较了所得到的结果。

A simple derivation process was presented for the bit error rate （BER） performance analysis of the ultra wideband （UWB） time hopping （TH） multiple access impulse radio （IR） communication system employing pulse position modulation （PPM） in the additive white Gaussian noise （AWGN） channel with multiuser interference （MUI）. In this derivation, the MUI was assumed a zero mean Gaussian process. The variance of the multiple access interference was computed from the statistical average of the error correlation output of the receiver correlator, which completed the correlation of the multiple access receiving signal and the local template signal in the receiver. Theoretical results are compared with simulation analysis.